Thought I would share a quick something - I just bought a trailer to carry 100lbs (batteries and camping gear) and I followed the advice of an old friend who road the west coast from Vancouver to California. He mentioned his worst problem was the trailer mounting point - on the side of the bike. Mostly he said it was good, but up long uphills it was "jerky" and on downhills, it tended to throw the bike to one side.
I thought about that since I want to throw 40Ah cells on a trailer with about 55 lbs of camping gear - 95lbs total. I was even thinking of putting the hub motor on the railer and keeping a pretty "clean" mountain bike for short jaunts.
I had selected the BOB trailers for the mounting point, but really could not be sure it would handle the weight. Then I searched the net.
There is a company that makes trailers that can carry much more than 100lbs at this link:
http://www.tonystrailers.com/ and he mounts at the seatpost, solving my issue with side mounts, as well as helping distribute the weight back to the bike where it's designed to take it.
He does add an electric assist, but with his single wheel trailer (20" rim) there is an opportunity, or his dual wheels (should I ever get a dual controller setup)... Apologies to Tony, I stole these photos... You can see what I mean....
